/*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SKSL_MODIFIERDECLARATION
#define SKSL_MODIFIERDECLARATION

#include "src/sksl/SkSLPosition.h"
#include "src/sksl/ir/SkSLIRNode.h"
#include "src/sksl/ir/SkSLLayout.h"
#include "src/sksl/ir/SkSLModifierFlags.h"
#include "src/sksl/ir/SkSLProgramElement.h"

#include <memory>
#include <string>

namespace SkSL {
class Context;
struct Modifiers;

/* *
 * A declaration that consists only of modifiers, e.g.:
 *
 * layout(blend_support_all_equations) out;
 */
class ModifiersDeclaration final : public ProgramElement {
public:
    inline static constexpr Kind kIRNodeKind = Kind::kModifiers;

    ModifiersDeclaration(Position pos, const Layout &layout, ModifierFlags flags)
        : INHERITED(pos, kIRNodeKind), fLayout(layout), fFlags(flags)
    {}

    static std::unique_ptr<ModifiersDeclaration> Convert(const Context &context, const Modifiers &modifiers);

    static std::unique_ptr<ModifiersDeclaration> Make(const Context &context, const Modifiers &modifiers);

    const Layout &layout() const
    {
        return fLayout;
    }

    ModifierFlags modifierFlags() const
    {
        return fFlags;
    }

    std::string description() const override
    {
        return fLayout.paddedDescription() + fFlags.description() + ';';
    }

private:
    Layout fLayout;
    ModifierFlags fFlags;

    using INHERITED = ProgramElement;
};
} // namespace SkSL

#endif
